This is the 9831st most frequent Spanish word.
bananas
A tropical fruit; plural of "banana."
In this sentence, 'bananas' refers to the fruit, used as a common noun in its plural form.
Me gusta comer bananas por la mañana.
I like to eat bananas in the morning.
Here, 'bananas' is used as a colloquial adjective to describe a situation as chaotic or crazy.
La situación se volvió completamente bananas cuando llegó la noticia inesperada.
The situation became completely bananas when the unexpected news arrived.
Again, 'bananas' is used to indicate the fruit, as a concrete noun referring to the item to be purchased.